The document discusses the importance of providing clear, consistent, and convincing evidence in teaching portfolios. It states that assessors will focus on evaluating the evidence provided by candidates, not on suggesting improvements. Candidates should draw their own conclusions about student learning and how it relates to their instructional goals and standards. The three main sources of evidence are the portfolio, analysis/reflection, and video examples. Clear evidence is distinct and easy to understand, while consistent evidence says the same things repeatedly and is not contradictory. Convincing evidence is credible and persuasive, using multiple pieces of evidence. Candidates are advised to include student work samples, descriptions of modifications made and feedback given, and examples of individualized instruction and analyzing student work.